2A4OE-B-224-in-1 Wireless Charger

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DongguanBoxindaElectronicTechnologyCo., LTD FederalCommunicationsCommission Authorizationand EvaluationDivision EquipmentAuthorizationBranch 7435 OaklandMills Road Columbia,MD 21046 9/15/23 U.S. AgentDesignation DongguanBoxindaElectronicTechnologyCo., LTDacknowledgestheir consentfor the followingcontact locatedin the UnitedStatesto act as their agent for serviceof processfor the equipmentfor whichauthorization is sought(FCC ID:2A4OE-B-22): Nameand companyof U.S. agent: Tim Payne,FCC US Agent,LLC PhysicalU.S. addressof agent:3722 IllinoisAvenue,Saint Charles,IL, 60174,USA FRN of U.S. agent: 0033402884 Email addressof U.S. agent: [email protected] FCC US Agent,LLCacknowledgestheir obligationto acceptserviceof processon behalfofDongguan BoxindaElectronicTechnologyCo., LTD. DongguanBoxindaElectronicTechnologyCo., LTDwith the FRN0031992282acceptsits obligationto maintainan agent for serviceof processin the UnitedStatesfor no less than one year after either the granteehas permanentlyterminatedall marketingand importationof the applicableequipmentwithinthe U.S., or the conclusionof any Commission-relatedadministrativeor judicialproceedinginvolvingthe equipment,whicheveris later. By signingthis form, we confirmthe aboveand that we are awareof the applicationrequirementslisted under§ 2.911(d)(7). The informationprovidedin this letter is basedon the referencedrule parts of Title 47 of the CFR as well as KDB 986446D01. An expirationdate for this letter does not exist. In case the U.S. agent changes,the granteeis obligatedto notify the FCC within 30 days via the grantingTCB. Sincerely, Signature [songzhenli ] [projectmanager] [DongguanBoxindaElectronicTechnologyCo., LTD ] Signature Tim Payne Manager FCC US Agent,LLC 48_[model] US_Agent_2.911(d)(7)-U, V05

Sincerely, Name/Title： songzhen li/project manager Company: Dongguan Boxinda Electronic Technology Co., LTD Address: Room 302, Building 1, 160 Luyuan Road Tangxia Town, Dongguan City dongguan, Guangdong Province China Phone: 13423908225 Fax: 0755-29744122 E-Mail: [email protected]

Page1of6FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. EUTConstructionalDetails ExternalEUTPhoto Photo1 Photo2 Page2of6FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo3 Photo4 Page3of6FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo5 Photo6 Page4of6FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo7 Photo8 Page5of6FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo9 Photo10 Page6of6FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo11 Photo12 ---TheEnd---

FCCLabel W:15mm L:30mm 4-in-1WirelessCharger ModelName:B-22 FCCID:2A4OE-B-22

Page1of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. EUTConstructionalDetails InternalEUTPhoto Photo1 Photo2 Page2of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo3 Photo4 Page3of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo5 Photo6 Page4of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo7 Photo8 Page5of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo9 Photo10

Page6of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo11 Photo12 Page7of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo13 Photo14 Page8of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo15 Photo16 Page9of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo17 Photo18 Antenna

Page10of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo19 Photo20 Page11of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo21 Photo22 Antenna Page12of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo23 Photo24 Antenna Page13of13FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo25 ------End------

Page1of7 FCCID:2A4OE-B-22 RFExposureEvaluation 1MeasuringStandard KDB680106RFExposureWirelessChargingAppsv03r01 2Requirements Accordingtotheitem5ofKDB680106v03r01: Inductivewirelesspowertransferapplicationsthatmeetallofthefollowingrequirementsareexcludedfrom submittinganRFexposureevaluation. (1)Powertransferfrequencyislessthan1MHz. (2)Outputpowerfromeachprimarycoilislessthanorequalto15watts. (3)Thesystemmayconsistofmorethanonesourceprimarycoils,chargingoneormoreclients.Ifmorethan oneprimarycoilispresent,thecoilpairsmaybepoweredonatthesametime. (4)Clientdeviceisplaceddirectlyincontactwiththetransmitter. (5)Mobileexposureconditionsonly(portableexposureconditionsarenotcoveredbythisexclusion). (6)TheaggregateH-fieldstrengthsanywhereatorbeyond15cmsurroundingthedevice,and20cm awayfromthesurfacefromallcoilsthatbydesigncansimultaneouslytransmit,andwhilethose coilsaresimultaneouslyenergized,aredemonstratedtobelessthan50%oftheapplicableMPE limit. Remark:Meetalltheaboverequirements. Limits Thecriterialistedinthefollowingtableshallbeusedtoevaluatetheenvironmentimpactofhumanexposure toradiofrequency(RF)radiationasspecifiedin1.1307(b) LimitsforMaximumPermissibleExposure(MPE) Page2of7 FCCID:2A4OE-B-22 3TestSetup 4TestProcedure 1)TheRFexposuretestwasperformedinanechoicchamber. 2)Themeasurementprobewasplacedattestdistance(15cmfromallsidesand20cmfromthetop)whichis betweentheedgeofthechargerandthegeometriccenterofprobe. 3)Thehighestemissionlevelwasrecordedandcomparedwithlimitassoonasmeasurementofeachpoints (A,B,C,D,E)werecompleted. 4)TheEUTwasmeasuredaccordingtothedictatesofKDB680106D01v03. Remark：TheEUT’stestpositionA,B,C,DandEisvalidfortheEandHfieldmeasurements. 5Descriptionofthetestmode Equipmentundertestwasoperatedduringthemeasurementunderthefollowing conditions: Test Mode Description Mode1 ACAdapter+EUT+Mobilephone+Earphone+Watch Record Mode2 ACAdapter+EUT+Mobilephone+Earphone Pre-tested Mode3 ACAdapter+EUT+Mobilephone+Watch Pre-tested Mode4 ACAdapter+EUT+Earphone+Watch Pre-tested Mode5 ACAdapter+EUT+Mobilephone Pre-tested Mode6 ACAdapter+EUT+Earphone Pre-tested Mode7 ACAdapter+EUT+Watch Pre-tested Mode8 TesttheEUTinidlemode. Pre-tested Note:1.Alltestmodeswerepre-tested,butweonlyrecordedtheworstcaseinthisreport. 2.Unfoldedandfoldedmodeweretested,butweonlyrecordedtheworstcase. Page3of7 FCCID:2A4OE-B-22 6PeripheralList N o. EquipmentManufacturerModelNo. Serial No. Powercordsignalcable 1 Adapter HNT HNT-QC530 N/AN/AN/A 2 Mobile lphone XIAOMIMI11 N/AN/AN/A 3Earphone PocBuds K6 N/AN/AN/A 4WatchAppleS6 N/AN/AN/A 7TestInstrumentslist TestEquipmentManufacturerModelNo.SN. Cal.Date (mm-dd-yy) Cal.Duedate (mm-dd-yy) ElectricandMagnetic FieldAnalyzer Narda EHP-200A180ZX1050521.06.202220.06.2024 8TestResult E-FiledStrengthat15cmfromtheedgessurroundingtheEUT(V/m) Unit Testmode Test Position A Test Position B Test Position C Test Position D Test Position E 50% Limits (V/m) Limits (V/m) Unfoldedmode Folded Mode V/m TM1 93.44106.4594.2591.8787.05307614 H-FiledStrengthat15cmfromtheedgessurroundingtheEUT(A/m) Unit Testmode Test Position A Test Position B Test Position C Test Position D Test Position E 50% Limits (A/m) Limits (A/m) Unfoldedmode Folded Mode A/m TM10.2630.2050.2000.1870.2110.8151.63 Page4of7 FCCID:2A4OE-B-22 H-FiledStrengthat20cmfromthetopoftheEUT(A/m) Unit Testmode Test PositionE 50%Limits (A/m) Limits (A/m) FoldedMode A/m TM1 0.2010.8151.63 Note:Alltestmodeswerepre-tested,butweonlyrecordedtheworstcaseinthisreport. Page5of7 FCCID:2A4OE-B-22 9TestSetupphoto TestPositionA-15cmfromtheedgeofEUTtothegeometriccenteroftheprobe TestPositionB-15cmfromtheedgeofEUTtothegeometriccenteroftheprobe Page6of7 FCCID:2A4OE-B-22 TestPositionC-15cmfromtheedgeofEUTtothegeometriccenteroftheprobe TestPositionD-15cmfromtheedgeofEUTtothegeometriccenteroftheprobe Page7of7 FCCID:2A4OE-B-22 TestPositionE-15cmfromtheedgeofEUTtothegeometriccenteroftheprobe TestPositionE-20cmfromtheedgeofEUTtothegeometriccenteroftheprobe ***Endofreport***

Page1of26ReportNo.:AIT23091106FW1 DongguanYaxu(AiT)TechnologyLimited No.22,JinqianlingThirdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. FCCTESTREPORT ClientInformation: Applicant:DongguanBoxindaElectronicTechnologyCo.,LTD Applicantadd.: Room302,Building1,160LuyuanRoad,TangxiaTown,DongguanCity, GuangdongProvinceChina Manufacturer:DongguanBoxindaElectronicTechnologyCo.,LTD Manufactureradd.: Room302,Building1,160LuyuanRoad,TangxiaTown,DongguanCity, GuangdongProvinceChina ProductInformation: ProductName:4-in-1WirelessCharger ModelNo.:B-22 BrandName:N/A FCCID:2A4OE-B-22 Applicablestandards:FCCCFRTitle47Part15SubpartC PreparedBy: DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang,Huangjiang,Dongguan, Guangdong,China Tel.:+86-769-82020499Fax.:+86-769-82020495 DateofReceipt:Sep.11,2023DateofTest:Sep.11,2023~Sep.13,2023 DateofIssue:Sep.14,2023TestResult:Pass ThisdevicedescribedabovehasbeentestedbyDongguanYaxu(AiT)TechnologyLimitedandthe testresultsshowthattheequipmentundertest(EUT)isincompliancewiththeFCCrequirements. Anditisapplicableonlytothetestedsampleidentifiedinthereport. Note:Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofDongguan Yaxu(AiT)TechnologyLimited,thisdocumentmaybealteredorrevisedbyDongguanYaxu(AiT) TechnologyLimited,personalonly,andshallbenotedintherevisionofthedocument.Thistest reportmustnotbeusedbytheclienttoclaimproductendorsement. Reviewedby:Approvedby: SimbaHuangSeal.chen Page2of26ReportNo.:AIT23091106FW1 DongguanYaxu(AiT)TechnologyLimited No.22,JinqianlingThirdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. 1Contents Page COVERPAGE 1CONTENTS............................................................................................................................................................2 2TESTSUMMARY...................................................................................................................................................5 2.1STATEMENTOFTHEMEASUREMENTUNCERTAINTY.............................................................................................5 2.2MEASUREMENTUNCERTAINTY............................................................................................................................5 3TESTFACILITY.....................................................................................................................................................6 3.1DEVIATIONFROMSTANDARD..............................................................................................................................6 3.2ABNORMALITIESFROMSTANDARDCONDITIONS...................................................................................................6 3.3TESTLOCATION.................................................................................................................................................6 4GENERALINFORMATION...................................................................................................................................7 4.1EUTTESTMODE...............................................................................................................................................8 4.2DESCRIPTIONOFTESTSETUP............................................................................................................................8 4.3PERIPHERALLIST...............................................................................................................................................9 4.4EUTPERIPHERALLIST......................................................................................................................................9 5EQUIPMENTSLISTFORALLTESTITEMS......................................................................................................10 6CONDUCTEDEMISSIONTEST.........................................................................................................................11 6.1CONDUCTEDEMISSIONMEASUREMENT................................................................................................11 6.2POWERLINECONDUCTEDEMISSIONLIMITS..........................................................................................11 6.3TESTPROCEDURE......................................................................................................................................11 6.4DEVIATIONFROMTESTSTANDARD........................................................................................................11 6.5TESTSETUP.................................................................................................................................................12 6.6EUTOPERATINGCONDITIONS..................................................................................................................12 6.7TESTRESULT..................................................................................................................................................13 7RADIATEDEMISSIONMEASUREMENT...........................................................................................................15 7.1RADIATEDEMISSIONLIMITS.............................................................................................................................15 7.2ANECHOICCHAMBERTESTSETUPDIAGRAM....................................................................................................16 7.3TESTPROCEDURE...........................................................................................................................................16 7.4DEVIATIONFROMTESTSTANDARD........................................................................................................16 7.5TESTRESULT..................................................................................................................................................17 8BANDWIDTHTEST.............................................................................................................................................21 8.1TESTPROCEDURE...........…

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深圳市瑞通千业科技有限公司 客户/Ciient 名称/TYPEA11-6.3UH超薄无线充发射线圈 产品型号 ModelNO单线圈G43.5*0.8双槽有孔100长背胶 产品编号 Partnunberingsystey 客户料号 Cientp/NO 工程编号 EnginrerNO 日期 /Date2022 年 12 月 22 日 本公司工程部/ForEnginerDepartnerOnly 修改内容/RrvisedCintent认可日期/APProvedDate 编制/Prepared审核/Checked认可/Approved 万纪美万纪美刘成昭 客户认可回签 /AuthorixedSignaturureCompanyChop 工程/Enginrer认可/QCAPProved认可日期/APProved 深圳市瑞通千业科技有限公司 一、线圈工艺/WindingProcese: NO 绕组线规匝数绕线方向备注 1N12UEW-B-0.08*10512TSCCW 2 二．电气性能/FEATURES: 1.测试条件（Testconditions）：25°C,65%RH@100KHz/1V 1.1电感量（Inductance） 1.11L0A（单独线圈）=3.8uH±20% 1.12L0A(线圈+磁片)=6.5uH±10% 1.2Q值=50MIN 1.3直流电阻（DCR）：60mΩMAX 1.4工作温度(OperatingTemperature)：-25°C~85°C 2.测试仪器(Testinstrument)：L:创达1068+1310;DCR:502BC;SIZE:Callipers 3.材料清单 N O 项目材料 1WIRE￠ 0.08*24*2p2UEW- 2FERRITE 43.5*5.3*0.8L型双槽有孔铁氧体硬磁背面双面胶 3GLUE水性白胶 4SOLDERHQ-996/JS-996 5Tin千岛纯锡 6 High temperature adhesive 8MM 高温胶带 7 8 深圳市瑞通千业科技有限公司 三．电路图/CIRCUITDIAGRAM 单位：MM 四．外形图 /OUTSIDEDIAGRA 注：线圈出线位置缠绕 8MM （ ref ）高温胶纸，磁片背面贴双面背胶。 标准ABCDEFG STD 43.5 ±0.539.5± 0.5 13.9± 0.35.3 ± 0.5100 ±2 3 ±1 2.2 ±0.3 单位：MM 深圳市瑞通千业科技有限公司 五．包装/PACKAGE 5.3包装以现有包装盘为参照标准，以实际出货包装为准，如有特殊要求可定制。 Thepackagingshallbebasedontheexustingpackingplateandtheactualdeliverypackage shallprevail.Ifthereisanyrequirement,wecancustomizeit. 深圳市瑞通千业科技有限公司 六、贮存和使用条件StorageandUsecondition 6.1贮存条件Storagecondition 6.1.1建议贮存条件：温度-25°C~85°C，湿度70%(Max.) Recommendedkeepingconditions:-25°C~85°C,70%RH(Max.) 6.1.2贮存期限：自生产之日起六个月内 Storagelife:Withinthelimitsofsixmonthsfrombeing produced. 6.2使用条件Usecondition 使用条件限制：温度=-25°C ~ 85°C,湿度≤90% Useconditionlimit:T=-25°C~85°C,RH≤90%.

深圳市瑞通千业科技有限公司 客户/Ciient 名称/TYPEA28-6.8UH无线充发射线圈 产品型号 ModelNOA28双线圈85*46*0.75厚背胶90/75MM长 产品编号 Partnunberingsystey 客户料号 Cientp/NO 工程编号 EnginrerNO 日期 /Date2023 年 5 月 8 日 本公司工程部/ForEnginerDepartnerOnly 修改内容/RrvisedCintent认可日期/APProvedDate 编制/Prepared审核/Checked认可/Approved 万纪美万纪美刘成昭 客户认可回签 /AuthorixedSignaturureCompanyChop 工程/Enginrer认可/QCAPProved认可日期/APProved 深圳市瑞通千业科技有限公司 一、线圈工艺/WindingProcese: NO 绕组线规匝数绕线方向备注 1N12UEW-B-0.08*105P9TSCCW 2 二．电气性能/FEATURES: 1.测试条件（Testconditions）：25°C,65%RH@100KHz/1V 1.1电感量（Inductance） 1.11L0A（单独线圈）=4.3uH±10% 1.12L0A(线圈+磁片)=6.8uH±10% 1.2Q值=80MIN 1.3直流电阻（DCR）：60mΩMAX 1.4工作温度(OperatingTemperature)：-25°C~85°C 2.测试仪器(Testinstrument)：L:创达1068+1310;DCR:502BC;SIZE:Callipers 3.材料清单 N O 项目材料 1WIRE￠ 0.08*105P2UEW- 2FERRITE 85*46*0.75厚磁片 3GLUE 水性白胶 4SOLDERHQ-996/JS-996 5Tin 千岛纯锡 6 High temperature adhesive 8MM高温胶带 7 8 深圳市瑞通千业科技有限公司 单位：MM 四．外形图 /OUTSIDEDIAGRA 注：线圈出线位置缠绕8MM（ref）高温胶纸，磁片背面贴双面背胶。 标准 ABCDEFGH STD 85±0.546±0.525.5±0.517±0.547±0.539±0.590/75±23±1 标准 I J STD 0.75± 0.05 3.4±0.05 单位：MM 深圳市瑞通千业科技有限公司 五．包装/PACKAGE 5.3包装以现有包装盘为参照标准，以实际出货包装为准，如有特殊要求可定制。 Thepackagingshallbebasedontheexustingpackingplateandtheactualdeliverypackage shallprevail.Ifthereisanyrequirement,wecancustomizeit. 深圳市瑞通千业科技有限公司 六、贮存和使用条件StorageandUsecondition 6.1贮存条件Storagecondition 6.1.1建议贮存条件：温度-25°C~85°C，湿度70%(Max.) Recommendedkeepingconditions:-25°C~85°C,70%RH(Max.) 6.1.2贮存期限：自生产之日起六个月内 Storagelife:Withinthelimitsofsixmonthsfrombeing produced. 6.2使用条件Usecondition 使用条件限制：温度=-25°C ~ 85°C,湿度≤90% Useconditionlimit:T=-25°C~85°C,RH≤90%.

MomaxTechnology(HK)Ltd UnitA,4/F,CheungLungIndustrialBuilding,10CheungYeeStreet,LaiChi Kok,Kowloon,HongKong 1.AntennaDescription: 2.AntennaPhoto Antenna type: loop coil Antenna Manufacturer: iMX Electronic (Shenzhen) Co.,LTD Model:B-22 antenna Antenna Gain(Peak): 0 dBi Frequency range:300kHz-350kHz : 45mm

Page1of2FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. TestSetupPhoto RadiatedEmission Page2of2FCCID: 2A4OE-B-22 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. ConductedEmission ------End------